Parking Brake

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 BMW M5, 2003 BMW 540i, 2003 BMW 530i, 2003 BMW 525i, and 2002 BMW M5. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: This test may set the ABS and ASC warning lights on the instrument cluster. The lights are illuminated because the system sees an implausible speed differential between the spinning rear wheels, and the stationary front wheels. Vehicles equipped with DSC3 will not set the lights.

Parking brake must be tested on roller dynamometer as follows:

With parking brake released wheel circumferential force is no more than 67 pound-force (300 N).
At first tooth, do not allow braking force to increase.
At 2nd tooth, braking action can begin and indicator light may be lit.
At 3rd tooth, braking action must begin and indicator light must be lit.
At 4th tooth, braking action increases.
At 5th tooth, wheel circumferential force must be at least 247.3 pound-force (1100 N) at one of the two rear wheels, and at least 224.8 pound-force (1000 N) at the other wheel. Wheel circumferential force differential (left to right) maximum 30 percent from highest value (shortly before wheel lockup). A readjustment must be carried out in event of larger deviations of wheel circumferential force. See PARKING BRAKE under ADJUSTMENTS.
Braking with locked wheels must be possible with parking brake.
ABS/ASC warning light, if on, will automatically switch off by switching off engine, waiting at least 30 seconds, restart engine and drive away. Warning lights will go out when speed exceeds 8 mph. (Fault codes will be retained in memory.)